JP2002186341A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a combine harvester having ready maintenance and high functionality, with which a grain culm feed operation is efficiently carried out. SOLUTION: This combine harvester is equipped with a reaping treatment speed synchronization route 32 for inputting power from a motor part E through a transmission part M, synchronizing the power with a traveling speed and changing the reaping treatment speed of a reaping part and a route 34 for a constant-speed treatment with which the power form the motor part E is inputted and the reaping treatment is carried out at a fixed reaping treatment speed. A power input part 72 for the constant-speed treatment from the route for the constant-speed treatment is installed outside a revolving shaft D1 of a reaping driving shaft 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a combine.

[0002]

2. Description of the Related Art Conventionally, as one form of combine, when an output from a prime mover unit is input to a counter case, a work driving force is output from the counter case, and power is transmitted to a reaping unit as a work driving force. In some cases, the harvesting processing speed of the reaping unit is changed in synchronization with the traveling speed so that the reaping efficiency of the reaping unit can be ensured well.

[0003] In the above-mentioned combine, when the aircraft approaches the ridge or when the aircraft changes direction, it is necessary to run the aircraft at a low speed, stop the aircraft, or move the aircraft backward. In this case, if the cutting processing speed of the cutting unit is controlled at low speed in synchronization with the running speed, the speed of the work of pouring the grain culm already cut by the cutting unit or the grain culm already conveyed by the feed chain into the threshing unit. And the pouring operation is interrupted, so that the efficiency of pouring the cereal stem is reduced.

Therefore, in the power transmission path in the counter case, in addition to a cutting processing speed tuning path for changing the cutting processing speed of the cutting section in synchronization with the traveling speed, the cutting processing is performed at a predetermined cutting processing speed. When a constant speed processing path is provided to make the machine run at a low speed or stop, the power transmission to the cutting processing speed tuning path is cut to transmit power to the constant speed processing path. In addition, there has been proposed a combine which can perform a mowing process at a predetermined mowing speed regardless of a running speed.

[0005]

However, when a counter case is provided, the manufacturing cost of the combine increases significantly.

[0006] For this reason, from the market, there is provided a cutting processing speed tuning function for changing the cutting processing speed of the cutting unit in synchronization with the running speed as described above, and a cutting operation at a predetermined cutting processing speed regardless of the vehicle speed. There is a demand for a combine that has a constant-speed processing function capable of performing processing and can be obtained at low cost.

However, a technique for producing such a high-performance combiner at low cost has not yet been established, and moreover,
When the mowing unit is opened forward during maintenance of the mowing unit, the mowing drive shaft, which extends and extends across the machine behind the mowing unit, rotates in conjunction with the mowing unit. It was not easy.

An object of the present invention is to provide a combine which can solve the above-mentioned problems.

[0009]

Therefore, according to the present invention, the cutting section provided on the front side of the machine body is provided at one end or near the end of a cutting drive shaft interlockingly connected to the cutting section. In a combine that can be rotated forward about the provided rotation axis, motive power is input from the prime mover unit via the transmission unit, and the reaping process speed tuning that changes the reaping process speed of the reaping unit in synchronization with the running speed A constant-speed processing path for inputting power from a motor unit and performing a mowing process at a predetermined mowing processing speed, and a constant-speed processing power input unit from the identification speed processing path to the mowing drive shaft. Provided on the outside of the rotating shaft of

Further, according to the present invention, an output pulley provided at an end of a threshing drive shaft of a threshing path for transmitting power from a prime mover unit to a threshing unit, A belt is wound around an input pulley serving as a constant-speed processing power input portion of the cutting drive shaft, and the input pulley approaches the output pulley when the cutting portion is rotated.

According to the third aspect of the present invention, the cutting unit provided on the front side of the machine body is provided with a rotating shaft provided at one end or near the end of a cutting drive shaft interlocked with the cutting unit. In a combine that is rotatable forward in the center, power is input to the mowing drive shaft from a motor unit via a transmission unit,
A cutting processing speed tuning path for changing the cutting processing speed of the cutting unit in synchronization with the running speed, and a constant speed processing path for inputting power from the prime mover unit to the cutting drive shaft and performing cutting processing at a predetermined cutting processing speed. And a power input unit for constant speed processing from the path for identification speed processing is provided at substantially the same position as the rotation axis of the cutting drive shaft.

Further, in the present invention, the constant speed processing path is constituted by a transmission rod provided with bevel gears at both ends and capable of extending and contracting in the axial direction, and the transmission rod is threshed from the motor unit. The bevel gear provided at the end of the threshing drive shaft of the threshing path that transmits power to the thruster, and the bevel gear provided at the constant-speed processing power input portion of the mowing drive shaft, provide power to the mowing unit. Can be transmitted.

According to the present invention, a universal joint is provided at two intermediate points of the transmission rod.

[0014]

Embodiments of the present invention will be described below.

In the combine according to the present invention, as a basic structure, an airframe provided with an operating section is mounted on a running section, and a cutting section for cutting a grain stick is attached to a front end of the airframe, and The cutting unit is configured to be rotatable forward around a rotation shaft provided on one side, and a threshing unit for threshing the grain rods cut by the cutting unit is provided on the body frame. A rocking sorting unit for sorting threshed grains is provided below the threshing unit, and a straw processing unit is provided at an upper rear portion of the rocking sorting unit. A grain storage unit is provided. The center of rotation of the forward rotation operation of the reaping unit is provided on a reaping drive shaft which is interlockingly connected to the reaping unit and extended behind and disposed so as to cross the machine frame. Also, the grain stalks that have been cut by the cutting unit are transported to the threshing unit via the feed chain.

As a characteristic structure of the combine, a power input section for constant speed processing from the constant speed processing path is provided outside the rotation axis of the cutting drive shaft.

That is, the combine according to the present embodiment can tune the running speed to change the reaping processing speed of the reaping unit, so that the reaping efficiency of the reaping unit can be secured satisfactorily. When running or stopping, the power is transmitted to the constant speed processing path, and the reaping drive shaft is driven at a constant speed from the identification speed processing path to the constant speed processing power input section of the reaping drive shaft. By inputting the power to be rotated, the mowing process can be performed at a predetermined mowing speed regardless of the running speed.

An output pulley provided at the end of a threshing drive shaft of a threshing path for transmitting power from the prime mover section to the threshing section, and a constant speed processing power of the mowing drive shaft. The belt can be wound around an input pulley serving as an input unit, and the input pulley can approach the output pulley when the cutting unit is rotated.

With this configuration, when the cutting section is to be opened forward, the input pulley serving as the constant-speed processing input section comes closer to the output pulley, so that the belt wound between the two pulleys. Can be bent, and the mowing part can be opened without removing the belt, and the opening operation of the mowing part can be easily performed.

Further, as another embodiment, a motive power is input from a prime mover unit via a transmission unit, and a reaping processing speed tuning path for changing a reaping processing speed of a reaping unit in synchronization with a running speed, and a power source from the prime mover unit. And a constant speed processing path for performing a mowing process at a predetermined mowing processing speed, and a constant speed processing power input from the constant speed processing path at substantially the same position as the rotation axis of the mowing drive shaft. A part can also be provided.

By providing the power input for constant speed processing from the path for constant speed processing at substantially the same position as the rotation axis of the cutting drive shaft, the cutting unit is provided on one side of the cutting drive shaft. When the robot is rotated around the rotating shaft and opened forward, the amount of change in the length of the constant-speed processing path can be reduced as much as possible. There is no need to remove it.

For example, the above-mentioned constant speed processing path can be constituted by a transmission rod provided with bevel gears at both ends and capable of being extended and contracted in the axial direction.

The transmission rod includes a bevel gear provided at an end of a threshing drive shaft of a threshing path for transmitting power from a motor unit to a threshing unit, and a bevel gear provided at a power input unit of the mowing drive shaft. The power can be transmitted to the reaping unit by being interposed therebetween.

In order to make the transmission rod extendable and contractable in the axial direction, a method is conceivable in which the rod on one side and the rod on the other side are spline-fitted, and the rods are slid at the fitting portion. Can be Further, it is preferable that a universal joint is provided at two halfway points of the transmission rod.

With the above configuration, when the mowing portion is opened forward, a change in the length of the transmission rod interlockingly connected via the bevel gear to the mowing drive shaft that rotates in conjunction with the mowing portion is reduced, Moreover, the transmission rod slides back and forth in the axial direction,
It is possible to absorb the variation in the length of the transmission rod.

With the configuration described above, the forward opening operation of the reaping section can be performed without any trouble, and a low-cost, high-performance combiner can be provided without equipping a conventional expensive counter case. Can be provided.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) An embodiment of the present invention will be described below with reference to the drawings. 1 is an overall side view of the combine according to the present embodiment, FIG. 2 is a plan view of an operation unit of the combine, FIG. 3 is a schematic explanatory view of a power transmission unit of the combine, and FIG. FIG. 5 is an explanatory diagram of a constant speed processing route.

As shown in FIG. 1, a combine A according to the present embodiment has a body frame 2 mounted on a pair of left and right crawler traveling parts 1 and 1, and a mowing part is provided at a front end of the body frame 2. 4, a threshing unit 6 is provided on the left front part of the body frame 2, and a swing sorting unit 7 is provided immediately below the threshing unit 6, while an upper rear portion of the swing sorting unit 7 is provided. The straw processing unit 8 is disposed immediately after the threshing unit 6. 11
Is a grain stalk transport mechanism provided in the cutting unit 4, 12 is a cutting blade, 13 is
This is a handling cylinder provided in the threshing unit 6.

In the combine A, an operating unit 9 is disposed at a front right portion on the body frame 2, and a position immediately behind the operating unit 9, which is directly above the threshing unit 6. A grain storage unit 10 is provided.

A feed chain 14 extending in the front-rear direction is disposed on the left side of the handling cylinder 13 provided in the threshing unit 6, and a narrow rod is provided above the feed chain 14.
15 are arranged facing each other, the rod 15 and the feed chain 14 cooperate to hold the base of the cereal rod and handle the tip of the cereal rod, and the lower peripheral surface of the drum 13 And can be conveyed from the front to the rear.

As shown in FIG. 3, the feed chain 14 can be opened by turning laterally around a shaft D provided at the rear end and serving as a fulcrum.
The maintenance of the threshing unit 6 and the swing sorting unit 7 inside the machine itself and the like can be performed. 14a is a bracket provided at the rear end of the feed chain 14, and the shaft D
Is rotatably fitted.

Further, the cutting section 4 can be opened forward with a rotation axis D1 provided on a cutting drive shaft 42, which will be described later, serving as a rotation fulcrum, so that the inside of the cutting section 4 can be maintained. Can be done.

As shown in FIG. 2, the driving section 9 has a steering column 22 having a steering wheel 23 mounted on an upper portion thereof as a steering device at a substantially central position in the front of a floor section 21 in the cabin 20. , Also the steering wheel 23
An operation column 24 is arranged at the left side of the vehicle, and a driver seat 25 is arranged at a position behind the steering wheel 23. Reference numeral 28 denotes a shift lever provided on the operation column 24.

The main clutch pedal 26 is arranged at the left front position of the floor 21 while the steering column 22 is sandwiched therebetween. A constant speed processing clutch pedal S, which serves as an operating means of the constant speed processing clutch 73 disposed in the vehicle, is disposed.

With the above configuration, this combine A cuts the cereal vegetation vegetated in the field by the cutting blade 12 provided on the cutting section 4 while running, and the cut culm provided on the cutting section 4 It is transported rearward and upward by the transport mechanism 11 and delivered to the feed chain 14, where the feed chain 14 and the rod 15 are narrowed.
While holding the base portion of the cereal rod by means of, the tip of the cereal rod is transported from the front to the rear along the lower peripheral surface of the handling cylinder 13 and threshing by the handling cylinder 13 Can be. Then, the threshed grains are sorted by the swing sorting unit 7,
While transporting and storing the selected grains to the grain storage unit 10,
Waste straw is processed for waste straw processing.

By the way, the running sections 1, 1 and the reaping section 4
The threshing unit 6 and the feed chain 14, as shown in FIG.
An output from the prime mover unit E is transmitted via a power transmission unit 30 to operate the engine.

The power transmission section 30 includes a traveling path 31 for transmitting power from the prime mover section E to the traveling sections 1 and 1 via the transmission section M, and a mowing section 4 from the prime mover section E via the transmission section M. A mowing processing speed tuning path 32 having a tuning control function of changing the mowing processing speed of the mowing unit 4 in synchronization with the running speed as a mowing path for transmitting power to the feed chain 14, and threshing from the motor unit E. A threshing path 33 for transmitting power to each of the unit 6 and the swing sorting unit 7 is provided,
Further, a constant-speed processing path for transmitting power from the prime mover unit E to the reaping unit 4 and the feed chain 14 via the threshing path 33 to perform reaping processing at a predetermined reaping processing speed.
3 4 is provided.

That is, the transmission section M is interlocked to the drive shaft 40 projecting from the prime mover section E via the main clutch C, and the transmission section M is connected to the transmission section M via the traveling path 31. The drive wheels 1a, 1a are interlocked and connected.

The reaping processing speed tuning path 32 is arranged so as to extend across the body frame 2 at a position behind the reaping section 4 and a pulley 44 attached to an output shaft 41 protruding from the transmission section M. A cutting power transmission belt 43 is wound between a cutting drive shaft 42 and a speed tuning input pulley 45 attached to an end opposite to the feed chain 14 of the cutting drive shaft 42.
The reaping clutch 35 can be freely tensioned and relaxed so that transmission of power can be connected and disconnected, so that the reaping processing speed of the reaping unit 4 can be changed in synchronization with the running speed. In addition, the pulley 44, the input pulley 45 for speed tuning,
Has a one-way clutch C1.

On the cutting drive shaft 42, a rotation shaft which is a rotation fulcrum near the end of the feed chain 14 is provided.
D1 is provided, and the reaper 4 can be opened by rotating the reaper 4 forward.

The threshing path 33 includes a drive shaft 40 protruding from the prime mover E and a feed chain from the prime mover E side.
Threshing drive belt between threshing drive shaft 50 extended to 14 side
51 is wound through pulleys 52 and 53, and the threshing transmission belt 51
Can be freely tensioned and relaxed by a threshing clutch 54, so that power transmission can be connected and disconnected.

Then, the handle 13 of the threshing unit 6 is attached to the threshing drive shaft 50.
(See Fig. 1) and the threshing drive shaft 50
The drive unit (not shown) of the swing sorting unit 7 is connected to the drive unit. Reference numeral 55 denotes a threshing unit transmission pulley, and reference numeral 56 denotes a selection unit transmission pulley.

Further, a constant-speed processing input pulley 72 is attached to the end of the cutting drive shaft 42 on the feed chain 14 side as a constant-speed processing power input section. A constant speed processing transmission belt 70 is wound between an output pulley 71 attached to the end on the feed chain 14 side of the threshing drive shaft 50, and the identification speed processing transmission belt 70 is The power transmission is connectable / disconnectable by the use clutch 73 so that it can be freely tensioned and relaxed. The one-way clutch C1 is provided on the constant speed processing input pulley 72.

In FIG. 3, reference numeral 47 denotes an output bevel gear attached to a midway portion of the cutting drive shaft 42. The output bevel gear 47 meshes with an input bevel gear 49 attached to the input shaft 48 of the cutting unit 4. Power can be transmitted from the cutting drive shaft 42 to the cutting unit 4 via the cutting processing speed tuning path 32 or the constant speed processing path 34.

Reference numeral 60 denotes a deceleration case provided at the left end of the mowing drive shaft 42 in the machine traveling direction. An output shaft 61 projects from the deceleration case 60, and is provided on the output shaft 61 and the feed chain 14. Drive chain 63 between input shaft 62 and sprockets 64,6
5, and the reduced drive power can be transmitted from the mowing drive shaft 42 to the feed chain 14 via the deceleration case 60.

In this embodiment, a bracket 14a is provided at the rear end of the feed chain 14,
4a is fitted on the shaft D which is a rotation fulcrum, and the feed chain 14
Can be opened laterally with the rear side as a pivot point.

When the feed chain 14 is opened outward, the input shaft 62 is fixed to the machine body side and can be separated from a driving sprocket 66 provided at the front end of the feed chain 14. Reference numeral 66a denotes a coupling mechanism provided on the driving sprocket 66 with the input shaft 61, 67 denotes a driven sprocket of the feed chain 14, and 68 denotes a driven shaft of the driven sprocket 67.

As described above, the combine A according to the present embodiment can be synchronized with the running speed by transmitting power by tensioning the cutting transmission belt 43 of the cutting processing speed tuning path 32 by the cutting clutch 35. Therefore, the cutting processing speed of the cutting unit 4 can be changed, and the cutting efficiency of the cutting unit 4 can be ensured well.

On the other hand, when the aircraft is driven at a low speed or brought into a stopped state, the constant speed processing clutch 73 described above is used.
If power is transmitted by tensioning the constant-speed processing transmission belt 70 in the constant-speed processing path 34, the mowing process can be performed at a predetermined mowing process speed regardless of the running speed.

Furthermore, such a high-performance combiner can be provided at low cost without equipping a conventional expensive counter case.

The present embodiment is characterized in that, in the above configuration, the constant-speed processing input pulley 72, which is a constant-speed processing power input unit from the constant-speed processing path 34, is connected to the cutting drive shaft 42. It is provided outside the rotation axis D1 serving as a rotation fulcrum.

That is, as described above, when the mowing unit 4 is opened forward around the rotation axis D1 at the time of maintenance, for example, the input pulley 72 for constant speed processing is driven by the mowing drive shaft.
As shown in FIG. 4, the input pulley 72 for constant speed processing is provided on the threshing drive shaft 50 because it is outside the rotation axis D1 provided on
The output pulley 71, and the constant-speed processing transmission belt 70 wound between the pulleys 71 and 72 is bent, so that the mowing unit 4 is opened without removing the belt 70. Can be.

As is apparent from FIG. 3, in the present embodiment, the constant speed processing path 34 provided between the threshing drive shaft 50 and the mowing drive shaft 42 is disposed on the feed chain 14 side. Therefore, the input pulley 72 for constant-speed processing is also disposed inside the feed chain 14, for example, the feed chain 14 itself, the threshing unit 6 and the swing sorting unit 7 inside the machine body.
When the feed chain 14 is opened to the outside at the time of maintenance such as the above, it is necessary to remove the components of the constant speed processing path 34 including the pulley 72 without the constant speed processing input pulley 72 becoming an obstacle. Is also gone.

Further, the power transmission to the constant speed processing path 34 is performed through the threshing drive shaft 50 extended from the prime mover section E side to the feed chain 14 side so as to traverse the fuselage. The speed processing path 34 can be easily arranged on the feed chain 14 side, and the layout of the power transmission path in the combine A can be simplified.

By the way, the above-mentioned constant speed processing clutch 73
Is connected to the constant speed processing clutch pedal S, which functions as a clutch operation switch, via a clutch operating mechanism 36 shown in FIG.

That is, the constant speed processing clutch 73 is
As shown in the figure, the base end of the tension arm 75 is pivotally supported on the arm support base 74 by a pivot pin 76, and the tension arm 75 is
Spring stay provided on the midway part of 75 and the body frame 2
With a tension spring 77 interposed between the tension arm 75 and the tension arm 75, the tension roller 75a provided at the end of the tension arm 75 is elastically attached in a direction away from the upper rotation side portion 70a of the constant-speed rotation transmission belt 70. I'm going.

The clutch operating mechanism 36 has a push-pull wire 78 interposed between the middle part of the tension arm 75 and the constant speed processing clutch pedal S provided in the operation unit 9.

The clutch actuating mechanism 36 according to the present embodiment is provided with a pedal pivot 79 on the right floor 21 of the steering column 22 projecting substantially at the center of the front part of the driving section 9. The rear of the clutch pedal S for constant-speed processing is pivotally supported by a pivot 81 on a pedal support arm 80 via a pedal support arm 80.
One end of the push / pull wire 78 is connected to a wire operating arm 82 extending below the pedal support arm 80 below the arm 81. 83 is a pedal restoring spring.

In this way, the push-pull wire 78 is pulled in conjunction with the depressing operation of the constant-speed processing clutch pedal S, and the tension roller 75a provided at the tip end of the tension arm 75 is driven for constant-speed processing transmission. By pressing against the upper rotating side portion 70a of the belt 70, the identification speed processing transmission belt 70 can be brought into a tension state, and a predetermined rotation speed is cut via the constant speed processing input pulley 72. It can be transmitted to the drive shaft 42.

That is, the worker sitting on the seat 25 of the driving unit 9 can depress the constant speed processing clutch pedal S with his / her foot, and can release his / her hand from the operating steering handle 23 or other levers. There is no need to speak, and the operation of pouring the cereal stem into the threshing unit 4 can be easily performed.

Then, when the constant speed processing clutch 73 is connected by the depressing operation of the constant speed processing clutch pedal S, the motor unit E → threshing path 33 → constant speed processing path 34.
The power is transmitted to the cutting drive shaft 42, the cutting unit 4 and the feed chain 14, and the cutting unit 4 and the feed chain 14 can be operated in synchronization with the threshing unit 7 without being synchronized with the traveling speed.

Therefore, even when the machine body is traveling at a reduced speed, stopped, or moved backward, the grain culm already harvested by the mowing unit 4 and the grain culm already conveyed by the feed chain 14 are transferred to the threshing unit 7. It is possible to efficiently perform the cereal stem pouring operation continuously without lowering the processing speed of the pouring operation and without interrupting the pouring operation.

When a normal mowing operation is performed in which the mowing processing speed is synchronized with the running speed, the depressing operation of the constant speed processing clutch pedal S is released so that the mowing clutch 35 is connected. As a result, power is transmitted to the power unit E → the transmission unit M → the cutting processing speed tuning path 32 → the cutting unit 4 and the feed chain 14 so that the cutting unit 4 and the feed chain 14 are connected to the traveling unit 1. , 1
Can be operated in synchrony with

When a normal harvesting operation in which the harvesting processing speed is synchronized with the traveling speed is performed by operating the constant speed processing clutch pedal S, or when a mowing operation is performed without being synchronized with the vehicle speed, the cutting drive shaft is used. A one-way clutch C1 is provided for the speed tuning pulley 45 serving as an input part of the mowing processing speed tuning path 32 and the constant speed processing input pulley 72 serving as an input part of the constant speed processing path 34 attached to both ends of 42. Therefore, the power of one of the reaping processing speed tuning path 32 and the constant speed processing path 34 having a higher rotation speed is input to the reaper 4.

In the case where power is transmitted from the constant speed processing path 34 to the reaping unit 4, the rotation speed of the reaping drive shaft 42 is set to 1/2 to the maximum rotation speed in this embodiment, as shown in FIG. Set up to the maximum rotation speed.

That is, in FIG. 6, in normal work, the rotation speed of the mowing drive shaft 42 changes linearly in synchronization with the vehicle speed (OA in FIG. 5). Can be rotated at a high speed even if the speed is low, and thus the processing speed of the mowing unit 4 can be performed at a high speed regardless of the vehicle speed.

Therefore, even when it is necessary to pour the cereals at the time of stopping the machine or running at low speed, the cutting unit 4 can perform high-speed processing, and the cutting work efficiency can always be maintained in a good condition.

FIGS. 7 and 8 show a modified example of the present embodiment in which the rotation fulcrum of the feed chain 14 is provided on the front end side.

The basic structure of the power transmission unit 30 shown in FIG. 7 is the same as that of the power transmission unit 30 in the first embodiment described above, but the rotation fulcrum of the feed chain 14 is connected to the front end. And the drive of the feed chain 14 is performed by the swing sorting unit 7 via the transmission mechanism 85 and the speed change mechanism 86.

That is, in the feed chain 14, the driven sprocket 67 is arranged on the front end side, the driving sprocket 66 is arranged on the rear end side, and the driving sprocket 66 is connected to the stepped transmission mechanism 86. And is supported by a feed chain drive shaft 88 provided at the position.

The transmission mechanism 85 has a structure in which a transmission belt 91 is wound via pulleys 92 and 93 between an output shaft 89 provided on the sorting section 7 and an input shaft 90 provided on the transmission mechanism 86. are doing.

The transmission mechanism 86 has the input shaft 90 and the feed chain drive shaft 88 interlockingly connected via a fan shaft 94 and an intermediate shaft 95, and a large / small gear 9 provided on the intermediate shaft 95.
High and low speed transmission gears 98 and 99 slidably provided on the feed chain drive shaft 88 are selectively meshed with the feed chain 6 and 97 so that the drive of the feed chain 14 can be shifted in two steps. 100 is an output gear, 101 is a dust exhaust fan, and 102 is a fan input / transmission gear.

Then, a bracket 14a provided on the front end side of the feed chain 14 is fitted on a shaft D which is a rotation fulcrum, and can be opened to the side using the front side as a rotation fulcrum.
When the feed chain 14 is opened, the feed chain drive shaft 88 is fixed to the machine body even in this case.

As described above, in this embodiment, as in the previous embodiment, when the mowing unit 4 is opened forward, the constant-speed processing input pulley 72 moves to the output burley 71 side. It is not necessary to remove the processing power transmission belt 70.

The structure shown in FIG. 8 has the same basic structure as that shown in FIG. 7, but differs in that the speed change mechanism 86 is continuously variable.

That is, the transmission mechanism 86 includes the output side split pulley 103 on the fan shaft 94 and the feed chain drive shaft 8.
8, the input side split pulley 104 is provided, the transmission belt 105 is wound between the two pulleys 103, 104, and the diameter of the both pulleys 103, 104 is steplessly changed and adjusted, so that the drive of the feed chain 14 is continuously variable. . 106 is a clutch.

In each of the above-described modified examples, when the reaping clutch 35 and the constant-speed processing clutch 73 are operated in conjunction with each other and the constant-speed processing clutch pedal S is operated, the connection / connection of the constant-speed processing clutch 73 is performed. The cutting clutch 35 is disconnected and
The pulley 44 is attached to the output shaft 41 protruding from the transmission section M, and the cutting drive shaft 42 is opposite to the feed chain 14 as in the first embodiment shown in FIG. The one-way clutch C1 provided on each of the first pulley 45 attached to the end of the cutting drive shaft 42 and the second pulley 72 attached to the end of the cutting drive shaft 42 on the feed chain 14 side is eliminated.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG.

In the second embodiment, a motive power is input from a prime mover unit E via a transmission unit M, and a reaping processing speed tuning path 32 for changing the reaping processing speed of the reaping unit 4 in synchronization with the running speed; E is provided with a constant speed processing path 34 for inputting power from E and performing a reaping process at a predetermined reaping process speed, as in the first embodiment. The constant-speed processing power input unit from the constant-speed processing path 34 is provided at substantially the same position as the dynamic shaft D1.

The constant-speed processing path 34 according to the present embodiment is constituted by a transmission rod 110 having first and second bevel gears 111 and 112 provided at both ends and capable of extending and contracting in the axial direction.

An input bevel gear 113 is mounted on the feed chain 14 side of the mowing drive shaft 42 as a constant-speed processing power input unit, and a threshing path 33 for transmitting power from the prime mover unit E to the threshing unit 6. An output bevel gear 114 is attached to the end of the drive shaft 50, and the first bevel gear 111 and the input bevel gear 113 are meshed with the second bevel gear 112 and the output bevel gear 114, so that the power from the prime mover unit E is reaped. The information is transmitted to the unit 4.

The transmission rod 110 is formed by spline-fitting the front transmission rod 110a and the rear transmission rod 110b in order to be able to expand and contract in the axial direction. The rods 110a and 110b can slide with each other. Moreover,
Universal joints 116, 116 are provided at two intermediate locations of the front and rear transmission rods 110a, 110b.

As described above, the constant speed processing path 34 is
Since the transmission rod 110 is slidable in the axial direction, the constant speed processing clutch 73 is provided in the threshing path 33. In this case, instead of a tension-type clutch mechanism, another clutch mechanism such as a dog clutch can be appropriately employed.

With the above configuration, when the mowing unit 4 is opened forward around the rotating shaft D1, the mowing drive shaft 42 which rotates in conjunction with the mowing unit 4 and the interlocking connection via the bevel gears 111 and 113. The transmission rod 110 thus slid back and forth in the axial direction, so that it is possible to absorb a change in the length of the transmission rod 110, so that a change in the length of the transmission rod 110 during rotation can be reduced, and the reaper 4 can be easily mounted. Can be opened forward.

The other configuration of the combine A according to the second embodiment is the same as that of the first embodiment, and therefore the description thereof is omitted.

[0086]

According to the present invention, the following effects can be obtained.

(1) According to the first aspect of the present invention, the cutting unit provided on the front side of the machine body is provided with a rotary shaft provided at one end or near the end of a cutting drive shaft interlocked with the cutting unit. A harvesting speed tuning path for inputting power from the prime mover via the transmission unit and changing the harvesting speed of the harvesting unit in synchronization with the traveling speed, and a prime mover unit. A constant-speed processing path for performing cutting processing at a predetermined cutting processing speed, and a constant-speed processing power input unit from the identification speed processing path to the rotation shaft of the cutting drive shaft. By being provided on the outside, the mowing efficiency of the mowing unit can be ensured well, and when the aircraft is driven at low speed or stopped, power is transmitted to the constant speed processing path, Constant speed processing of the mowing drive shaft from the identification speed processing path Use power input portion to the reaper drive shaft enter the power for constant speed, it is possible to perform the cutting process at a predetermined cutting processing speed regardless of the speed. Moreover,
When the reaping unit is opened forward, the reaping processing speed tuning path and the constant-speed processing power input unit do not hinder the opening of the reaping unit.

(2) According to the second aspect of the present invention, an output pulley provided at an end of a threshing drive shaft of a threshing path for transmitting power from a prime mover section to a threshing section comprises:
A belt is wound around an input pulley serving as a constant-speed processing power input unit of the mowing drive shaft, and when the mowing unit is rotated, the input pulley approaches the output pulley. When the mowing unit is to be opened forward, the input pulley serving as the constant-speed processing input unit comes closer to the output pulley, so that the belt wound between the two pulleys is bent. The reaping unit can be easily opened without removing the belt. And like before,
A low-cost, high-performance combiner can be provided without providing a counter case or the like.

(3) According to the third aspect of the present invention, the cutting unit provided on the front side of the machine body is provided with a rotating shaft provided at one end or near the end of a cutting drive shaft interlocked with the cutting unit. In a combine that is rotatable forward with respect to the center, power is input from the prime mover unit to the mowing drive shaft via the transmission unit, and the mowing processing speed is adjusted in synchronization with the running speed to change the mowing processing speed of the mowing unit. A path, a constant-speed processing path for inputting power from the motor unit to the cutting drive shaft and performing a cutting process at a predetermined cutting processing speed, and a constant-speed processing power input unit from the identification speed processing path. By providing the rotary shaft of the cutting drive shaft at substantially the same position, similarly to the above (1), it is possible to ensure good cutting efficiency by the cutting unit, and to run the machine at low speed or stop the machine. To transmit power to the constant speed processing path Thus, the power for rotating the cutting drive shaft at a constant speed is input from the identified speed processing path to the constant speed processing power input portion of the cutting drive shaft, and the reaping process is performed at a predetermined reaping process speed regardless of the traveling speed. Can be done, and
When the reaping unit is opened forward, the reaping processing speed tuning path and the constant-speed processing power input unit do not hinder the opening of the reaping unit.

(4) According to the present invention, the constant speed processing path is constituted by a transmission rod provided with bevel gears at both ends and capable of extending and contracting in the axial direction. A bevel gear provided at the end of the threshing drive shaft of the threshing path for transmitting power to the threshing unit, and a bevel gear provided at a constant speed processing power input unit of the mowing drive shaft. Because the power can be transmitted, the transmission rod slides back and forth in the axial direction when the mowing part is opened, and can absorb fluctuations in the length of the transmission rod. The effect of the above (3) can be realized with a simple mechanical structure.

(5) According to the fifth aspect of the present invention, the forward opening operation of the reaping unit can be performed more smoothly by providing the universal joint at two intermediate points of the transmission rod.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine according to a first embodiment.

FIG. 2 is a plan view of an operating unit of the combine.

FIG. 3 is a schematic explanatory view of a power transmission unit of the combine.

FIG. 4 is an explanatory diagram when the reaper is opened forward.

FIG. 5 is an explanatory diagram of a constant speed processing route.

FIG. 6 is a graph showing a relationship between a rotation speed of a cutting drive shaft and a vehicle speed.

FIG. 7 is a schematic explanatory view showing a modified example of the power transmission unit.

FIG. 8 is a schematic explanatory view of a power transmission unit showing a modification.

FIG. 9 is an explanatory diagram when the reaper in the second embodiment is opened forward.

[Explanation of symbols]

 A Combine D1 Rotary axis E Motor unit M Transmission unit 4 Cutting unit 6 Threshing unit 32 Harvesting processing speed tuning path 33 Threshing path 42 Harvesting drive shaft 50 Threshing drive shaft 72 Constant speed input pulley (Constant speed processing power input unit) )

Claims (5)

[Claims] A reaping unit provided on a front side of a machine body is rotatable forward around a rotation shaft provided at one end or near an end of a reaping drive shaft interlocked with the reaping unit. In the combine, a motive power is input from the prime mover unit via the transmission unit, and a reaping processing speed tuning path for changing the reaping processing speed of the reaping unit in synchronization with the traveling speed, and a motive power is input from the prime mover unit to perform a predetermined reaping process. A combiner, comprising: a constant-speed processing path for performing a mowing process at a speed; and a constant-speed processing power input unit from the constant-speed processing path provided outside a rotation axis of the cutting drive shaft. . 2. An output pulley provided at the end of a threshing drive shaft of a threshing path for transmitting power from a prime mover section to a threshing section through a constant speed processing path, and a constant speed processing power input of the mowing drive shaft. The combine according to claim 1, wherein a belt is wound between the input pulley and the input pulley, and the input pulley approaches the output pulley when the cutting unit is rotated. 3. A mowing portion provided on the front side of the machine body is rotatable forward around a rotary shaft provided at one end or near an end of a mowing drive shaft interlocked with the mowing portion. In the combine, power is input from the prime mover section to the mowing drive shaft via the transmission section, and a mowing processing speed tuning path for changing the mowing processing speed of the mowing section in synchronism with the running speed, and the mowing power from the prime mover section. A constant-speed processing path for inputting to the drive shaft and performing a reaping process at a predetermined reaping processing speed is provided, and a constant-speed processing power input unit from the identification speed processing path is connected to the rotating shaft of the reaping drive shaft A combine provided at substantially the same position. 4. A threshing path of a threshing path for transmitting power from a prime mover section to a threshing section, wherein the constant speed processing path is constituted by a transmission rod provided with bevel gears at both ends and capable of extending and contracting in the axial direction. Between the bevel gear provided at the end of the drive shaft and the bevel gear provided at the power input unit for constant speed processing of the mowing drive shaft, so that power can be transmitted to the mowing unit. A combine according to claim 3. 5. The combine according to claim 4, wherein universal joints are provided at two midpoints of the transmission rod.